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I think the latest Redbook about Best Practices is also a good one. But I'm still looking for some answers. Manuals are talking about maximum configurations: Max Host Ports/cluster, Max Host ID's per I/O group, etc.<div>&nbsp;</div> Now I'm looking for how to make the count. For example: I have hosts with 2 single port HBA's, each connected to a separate fabic. So are the 2 adapters together one Host-id? And so there more calculations to make.<div>&nbsp;</div> It would be great if there was a (cli) command to get all these totals. It would even be more than great when the SVC (or TPC) could tell me how many host ids, port logins, vdisks, mdisks,etc are free to add to the SVC.<div>&nbsp;</div> Maybe its already there, but then I have overlooked it and a link or document would be appreciated.<div>&nbsp;</div> GreetingsTmasteen

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Tmasteen,<div>&nbsp;</div> Thanks for the comments. On the specific question of host ID's vs WWPN's the maximum supported numbers do depend on the fabric type. But assuming the most common Cisco, Brocade/McData fabrics then we support :<div>&nbsp;</div> 256 Host ID's per IO Group512 WWPN per IO Group<div>&nbsp;</div> (The assumption here being that a single Host ID will contain the WWPN on both fabrics)<div>&nbsp;</div> The full details of maximum configurations are available here :http://www-1.ibm.com/support/docview.wss?rs=591&amp;uid=ssg1S1003096#Max<div>&nbsp;</div> As for a CLI command that gave you the totals - I have raised a DCR to request this be added - as I agree it sounds like a good thing to provide. As you can imagine we have many hundreds of things like this we'd like to add and limited resource... <div>&nbsp;</div> In the meantime, the only thing I can suggest is what I do to count and verify I have the expected number of objects, to write a script that does something like :<div>&nbsp;</div> ssh admin@clusterip svcinfo lsmdisk -nohdr | wc -l<div>&nbsp;</div> Repeat for all the objects you are interested in and subtract from the maximums as listed above. <div>&nbsp;</div> <div>&nbsp;</div> <div>&nbsp;</div>